Valve



W. C. CONNELLY.

VALVE.

APPLICATION FILED MAY 2 192i.

"-9 V fim 1,438,747, I Patented Dec.12,1922.

V "Z-zl'xll .l atented lilac. l2 llh fii WILLIAM G. CONNELLY, or smear/roan, rvraiavriaivn.

VALVE.

Application filed May 24,

clare the following to be a full, clearyand exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to valves.

Among the objects of my invention are To produce a valve suitable for use in tanks and so Constructed that it will be capable of breaking any ice films that may form adjacent to the Sealing surfaces of the valve. v v

To produce a valve so constructed and arranged that deposition of sediment uponthe sealing surface thereof is prevented.

To produce a valve having the abovenamed characteristics which shall be simple, cheap and eiiicient.

In carrying outmy invention I make use of the instrumentalities illustrated in the accompanying drawings, in which:

Figure 1 shows the central section ofa tank equipped with one of my improved valves for draining the contents therefrom. In this view the head formed on the valve stem is shown in section.

Fig. 2 is a view of the parts shown in Fig. 1. looking in the direction of the arrow 2 in said figure. .Fig. 3 is a central section of the valve stem and upper portion of the nipple 8, the stem being in the position into which it is moved in order to open the valve.

In the drawings:

5 represents the bottom of atank prefer ably provided with a neck 6 having a threaded hole in which is screwed the threaded end 7 of the nipple 8. The nipple S is preferably formed integrally with the hexagon head 9 by means of which the threaded end 7 may be firmly screwed with in the hole in the neck 6. The nipple 8 is provided with a threaded hole in which is screwed the valve stem 10. The valve into the central 1921. Serial No. 472,105.

stem 10 is provided onits lower end with a squared portion 11 for the reception of a, wrench and 'with a central hole 12 extending from the bottom of said stem to near the head 13 whichis formed integrally with the. stem 10. The hole 12 communicates at its top with the cross holes 141 1 which terminate at the threaded outer surface or". the stem 10. a

The upper end of the'nipple 8 is provided with a chamfered portion 15 against which fits the frusto-conical surface 16 formed on the inner side of the head 13.

The operation of my improved valve is as follows Theparts being in the positions shown 6 in Fig. 1, it is evident that no liquid contain'ed within the tank can pass out through the hole 12 because a double seal exists namely: One between the irustoconical surface 16 of the head 13 and the 7 chami'ered portion 15 of thenipple 8; and the other between the surface of the stem 10 and the threaded hole in the nipple 8 in which it is screwed.

It is evident that when the parts'are in these positions any sediment accumulating in" the bottom of the tank will be deflected by the head 13 away from the juncture of the surface 16 and chamfered portion 15.

Furthermore, it is evident that if film of ice should form about these parts, when a wrench is applied to the squared end lithe threaded valvestem may be screwed upwardly with sufiicient force to break the filmsof ice. 1

hen the valve stemlO is sufliciently high to bring the head 13 into the position shown in Fig. 3, then the liquid within the tank may fiow through the cross holes l i-4 1 hole 12 and so from the tank.

Thus it will be evident that in my im proved valve, the valve surfaces are shielded from sediment and provision is made for breaking accumulations of ice thereabont. 9

While I have shown one embodiment of my improved valve for purposes of illustration, it is to be understood that l do not desire-t0 be limited thereby; fox" many changes may be made thereln Without de passages communlcating with the lntei'ior parting from the spirit of my invention,

I claim The comblnatlon \vlth a tank QOIllPllSlIlg a bottom, of a nipple mounted in said bottom and having 2L threaded hole and a sallent irusto-conlcal end prqectmg up- Wardly in said tanlge valve stem screwed in said hole and having a head to make 1.0

valve tightengagement with said end and of said tank when said head is disengaged from said end.

In testlmony whereof, I aflix my signature. I R I v WILLIAMS. CONNELLY. 

